de.lmu.ifi.dbs.elki.data.model

Class EMModel

java.lang.Object

de.lmu.ifi.dbs.elki.data.model.SimplePrototypeModel<double[]>

de.lmu.ifi.dbs.elki.data.model.MeanModel

de.lmu.ifi.dbs.elki.data.model.EMModel

All Implemented Interfaces:

Model, PrototypeModel<double[]>, TextWriteable

public class EMModel
extends MeanModel

Cluster model of an EM cluster, providing a mean and a full covariance Matrix.

Since:

0.2

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
private double[][]	covarianceMatrix Cluster covariance matrix

Fields inherited from class de.lmu.ifi.dbs.elki.data.model.SimplePrototypeModel

prototype

Fields inherited from interface de.lmu.ifi.dbs.elki.data.model.Model

TYPE

Constructor Summary

Constructors

Constructor and Description
EMModel(double[] mean, double[][] covarianceMatrix) Constructor.

Method Summary

Modifier and Type	Method and Description
double[][]	getCovarianceMatrix()
void	setCovarianceMatrix(double[][] covarianceMatrix)
java.lang.String	toString()
void	writeToText(TextWriterStream out, java.lang.String label) Implementation of TextWriteable interface.

Methods inherited from class de.lmu.ifi.dbs.elki.data.model.MeanModel

getMean, getPrototypeType

Methods inherited from class de.lmu.ifi.dbs.elki.data.model.SimplePrototypeModel

getPrototype, prototypeToString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

covarianceMatrix

private double[][] covarianceMatrix

Cluster covariance matrix

Constructor Detail

EMModel

public EMModel(double[] mean,
               double[][] covarianceMatrix)

Constructor.

Parameters:

mean - Mean vector

covarianceMatrix - Covariance matrix

Method Detail

writeToText

public void writeToText(TextWriterStream out,
                        java.lang.String label)

Description copied from interface: PrototypeModel

Implementation of TextWriteable interface.

Specified by:

writeToText in interface Model

Specified by:

writeToText in interface PrototypeModel<double[]>

Specified by:

writeToText in interface TextWriteable

Overrides:

writeToText in class SimplePrototypeModel<double[]>

Parameters:

out - Output steam

label - Optional label to prefix

getCovarianceMatrix

public double[][] getCovarianceMatrix()

Returns:

covariance matrix

setCovarianceMatrix

public void setCovarianceMatrix(double[][] covarianceMatrix)

Parameters:

covarianceMatrix - covariance matrix

toString

public java.lang.String toString()

Overrides:

toString in class SimplePrototypeModel<double[]>